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/**
 * @file datatop_opt.h
 * @brief Declares methods and defines struct used within datatop_opt.c
 *
 * Struct defined is used when parsing the CLI arguments.
 */

#ifndef DATATOP_OPT_H
#define DATATOP_OPT_H

#define OPT_CHOSE             1
#define OPT_NOT_CHOSE         0
#define DEFAULT_POLL_INTERVAL 1
#define POLL_NOT_SPECIFIED   -1
#define POLL_TIME_DEFAULT     30
#define POLL_TIME_SELECTED     1
#define PARSE_SUCCESS     0
#define PARSE_FAILURE    -1
#define PARSE_FORCE_EXIT -2
#define VALID 0
#define INVALID -1
#define DEFAULT_NICE 19               /* Lowest priority */

/**
 * @struct cli_opts
 * @brief Struct used to store arguments from CLI input.
 *
 * @var cli_opts::print_cl
 * Represents -p argument.
 * @var cli_opts::poll_per
 * Polling frequency argument.
 * @var cli_opts::poll_time
 * Polling duration argument.
 * @var cli_opts::cli_help
 * Represents -h argument.
 * @var cli_opts::file_name
 * File name argument.
 * @var cli_opts::print_csv
 * Represents -w argument.
 */
struct cli_opts {
	int print_cl;                   /* -p option */
	long int poll_per;              /* -i option */
	long int poll_time;             /* -t option */
	int cli_help;                   /* -h option */
	char *file_name;                /* -w option */
	char *snapshot_file;            /* -s option */
	int print_csv;
	int poll_time_selected;
	int priority;                   /* -n option (niceness) */
};

int dtop_parse_cli_opts(struct cli_opts *clopts, int argc, char **argv);
void dtop_print_help_opts(void);
void dtop_print_interactive_opts(void);
void dtop_load_default_options(struct cli_opts *clopts);

#endif /* DATATOP_OPT_H */